Method of producing earthenware



March 27, 1934. P. HIGGINS METHOD OF PRODUCING EYARTHENWARE Filed Cot. 6, 1930 Patented Mar. 27, 1934 UNlTED STATES PATENT OFFICE 1 Claim.

This invention relates toy a novel method of producing earthenware.

One object of the method, or process, is to produce articles of earthenware that will be po- 5 rous, that is, Will have air pockets throughout,

and will consequently be light and at the same time strong and durable.

The invention also comprehends a novel product, or article of manufacture for use as building material, pottery, and like products.

With the above and other objects in View the invention relates to a novel method and to a novel article of manufacture as hereinafter described and as illustrated in the accompanying drawing, wherein:

Figure 1 shows a side View, partly in section, of a pot formed by the process described.

Figure 2 shows a perspective view of one form of building unit, partly broken away, illustrating the invention.

Figure 3 shows a side view, partly in section of a vase, illustrating the invention.

Figure 4 shows a perspective View partly broken away, of another form of building unit, and

Figure 5 shows a perspective view of a slab, partly broken away, illustrating the invention. Y

In carrying out the process fusible clay, or

other fusible earth formation is used. The clay, or formation used should, preferably, be of such character as will fuse at a comparatively low temperature. The formation, or mixture of formations, or clays, used are of such character that when heated to the fusing point the gases formed therein will create voids, or pockets throughout the mass.

The melted formation is then poured into moulds of any selected shape and of such material as Will withstand the heat without injury. The freed vapors, or gas, will form bubbles in the moulten material which will create voids or pockets through-out the moulded object. Y

The drawing and description are illustrative only, while the broad principle of the invention will be dened by the appended claim.

What I claim is:

The method of producing light, porous earthenware which consists in heating a natural earth formation, which fuses at a low temperature, to the fusing point to generate gas therein to form pockets, or voids, throughout the mass, then pouring the melted substance into a mould to mold the same to the desired shape and permitting the same to set, in final form in said mold.

PATTILLO HIGGINS. 

